Figure 5.

Contour plots of H _max and ζ ² H _max for λ = 1. (A) Contour plot of H _max for λ = 1. Ordinate axis: ${\overline{\omega }}_{\eta }^2=({\overline{\omega }}_{\eta }/{\overline{\omega }}_r{)}^2$; abscissa: α ² + ζ. The values of H _max are indicated in the plot. Brighter shades indicate higher values. (B) Contour plot of (α ² + ζ)ζ ² H _max assuming α ² = 1.1, corresponding to a 10 kHz cell (see text). Ordinate axis: ${\overline{\omega }}_{\eta }^2$; abscissa: ζ. The values of (α ² + ζ)ζ ² H _max are indicated in the plot. Brighter shades indicate higher values.